如何在Web工程项目中使用Struts
2024-07-21 02:15:03
供稿：网友
起初的工程（未引入struts）目录结构如下：
修改你的web.xml配置
如下：
修改之前是：
<?xml version="1.0" encoding="utf-8"?><!doctype web-app public "-//sun microsystems, inc.//dtd web application 2.3//en" "http://java.sun.com/dtd/web-app_2_3.dtd"><web-app><!-- the mapping for the default servlet --><servlet><servlet-name>estservlet</servlet-name><servlet-class>action.jdbcservlet</servlet-class></servlet><servlet-mapping><servlet-name>estservlet</servlet-name><url-pattern>/estservlet</url-pattern></servlet-mapping><servlet><servlet-name>delconad</servlet-name><servlet-class>action.delconadbean</servlet-class></servlet><servlet-mapping><servlet-name>delconad</servlet-name><url-pattern>/delconad</url-pattern></servlet-mapping></web-app>
加入：
<!-- import struts mvc framework--><!-- standard action servlet configuration 标准struts action servlet 配置--><servlet>
<servlet-name>action</servlet-name>
<servlet-class>org.apache.struts.action.actionservlet</servlet-class>
<init-param>
<param-name>config</param-name>
<param-value>/web-inf/struts-config.xml</param-value>
</init-param>
<init-param>
<param-name>debug</param-name>
<param-value>2</param-value>
</init-param>
<init-param>
<param-name>detail</param-name>
<param-value>2</param-value>
</init-param>
<init-param>
<param-name>validate</param-name>
<param-value>true</param-value>
</init-param>
<load-on-startup>2</load-on-startup></servlet><!-- standard action servlet mapping 标准struts .do请求--><servlet-mapping><servlet-name>action</servlet-name><url-pattern>*.do</url-pattern></servlet-mapping><!--struts tag library descriptors struts 标签--><taglib>
<taglib-uri>/web-inf/struts-bean.tld</taglib-uri>
<taglib-location>/web-inf/struts-bean.tld</taglib-location>
</taglib>
<taglib>
<taglib-uri>/web-inf/struts-html.tld</taglib-uri>
<taglib-location>/web-inf/struts-html.tld</taglib-location>
</taglib>
<taglib>
<taglib-uri>/web-inf/struts-logic.tld</taglib-uri>
<taglib-location>/web-inf/struts-logic.tld</taglib-location>
</taglib>
<taglib>
<taglib-uri>/web-inf/struts-template.tld</taglib-uri>
<taglib-location>/web-inf/struts-template.tld</taglib-location>
</taglib>
<taglib>
<taglib-uri>/web-inf/struts-nested.tld</taglib-uri>
<taglib-location>/web-inf/struts-nested.tld</taglib-location>
</taglib>
<taglib>
<taglib-uri>/web-inf/struts-tiles.tld</taglib-uri>
<taglib-location>/web-inf/struts-tiles.tld</taglib-location>
</taglib>
引入struts所需的标签库
引入目录结构如下：（配置文件描述）
在工程中引入struts工程所需的.jar文件
目录结构如下：
引入资源文件：
applicationresources.properties
内容如下：
# -- buttons --button.submit=submitbutton.cancel=cancelbutton.confirm=confirmbutton.reset=resetbutton.save=save
现在编写一个测试代码：
编写一个提交数据库的表单jsp文件usestruts.jsp：
如下：
<!doctype html public "-//w3c//dtd xhtml 1.0 transitional//en"
"http://www.w3.org/tr/xhtml1/dtd/xhtml1-transitional.dtd"><%@ page language="java" contenttype="text/html; charset=utf-8" %><%@ taglib url="/web-inf/struts-html.tld" prefix="html" %><%@ taglib url="/web-inf/struts-bean.tld" prefix="bean" %><html:html xhtml="true" locale="true"><head><meta http-equiv="content-type" content="text/html; charset=utf-8" /><title>使用 struts dynaactionform 插入mysql数据库</title><html:base/><link rel="stylesheet" type="text/css" href="../css/example.css" /></head><body><html:errors/><html:form action="/insertmysql.do"><p>用户：<br/><html:text property="user" size="40" maxlength="20"/></p><p>密码：<br/><html:text property="password" size="40" maxlength="20"/></p><p>标题:<br/><html:text property="title" size="40" maxlength="50"/></p><p>内容:<br/><html:text property="content" size="40" maxlength="50"/></p><p>作者:<br/><html:text property="author" size="40" maxlength="50"/></p></html:form></body></html:html>修改struts-config.xml文件：<form-beans>
<!-- dynaactionform bean for usesturts -->
<form-bean name="usestrutsform" type="org.apache.struts.action.dynaactionform">
<form-property name="user" type="java.lang.string" />
<form-property name="password" type="java.lang.string" />
<form-property name="title" type="java.lang.string" />
<form-property name="content" type=" java.lang.string " />
<form-property name="author" type="java.lang.string" />
</form-bean>
</form-beans><!-- ========== action mapping definitions ============================= -->
<action-mappings>
<!-- usersturts actionform ===================================== -->
<action path="/prepareusestruts"
type="action.preusestrutsaction">
<forward name="success" path="/jsp/usestruts.jsp"/>
</action>
<action path="/processusestruts"
type="action.processusestrutsaction"
name="usestrutsform"
scope="request"
input="/jsp/usestruts.jsp"
validate="true">
<forward name="success" path="/jsp/usestruts.jsp"/>
</action>
</action-mappings>
创建两个action：
preusestrutsaction.java 、processusestrutsaction.java
preusestrutsaction.java:
代码如下：
/* * $header: d:/cvs/repository/struts-examples/web/040content/web-inf/src/java/examples/successaction.java,v 1.2 2003/06/13 06:23:13 sraeburn exp $ * $revision: 1.2 $ * $date: 2005/11/25 06:23:13 $ * this software consists of voluntary contributions made by many * individuals on behalf of the apache software foundation. for more * information on the apache software foundation, please see * <http://www.apache.org/>. * by huhpreal */package action;import javax.servlet.http.httpservletrequest;
import javax.servlet.http.httpservletresponse;
import org.apache.struts.action.action;
import org.apache.struts.action.actionform;
import org.apache.struts.action.actionforward;
import org.apache.struts.action.actionmapping;
/** * * @author huhpreal * @version $revision: 1.2 $ $date: 2003/06/13 06:23:13 $ */public class preusestrutsaction extends action {
// ------------------------------------------------------------constructors
/**
* constructor for successaction.
*/
public preusestrutsaction() {
super();
}
// ---------------------------------------------------------- action methods
/**
* @param mapping the actionmapping used to select this instance
* @param form the optional actionform bean for this request (if any)
* @param request the http request we are processing
* @param response the http response we are creating
*
* @exception exception if mapping.findforward throws an exception
*
* @return the "success" actionforward, or null if it cannot be found
*/ public actionforward execute(
actionmapping mapping,
actionform form,
httpservletrequest request,
httpservletresponse response)
throws exception {
return mapping.findforward("success");
}}
processusestrutsaction.java：
代码如下：
/* * $header: d:/cvs/repository/struts-examples/web/040content/web-inf/src/java/examples/dyna/processdynaaction.java,v 1.3 2003/06/22 04:51:04 sraeburn exp $ * $revision: 1.3 $ * $date: 2005/11/25 04:51:04 $ * * this software consists of voluntary contributions made by many * individuals on behalf of the apache software foundation. for more * information on the apache software foundation, please see * */package action;
import javax.servlet.http.httpservletrequest;
import javax.servlet.http.httpservletresponse;
import org.apache.struts.action.action;
import org.apache.struts.action.actionform;
import org.apache.struts.action.actionforward;
import org.apache.struts.action.actionmapping;
import org.apache.struts.action.dynaactionform;
import bean.linkdb;
/** * retrieve and process data from the submitted form
* * @author huhpreal * @version $revision: 1.3 $ $date: 2005/11/25 04:51:04 $ */public class processusestrutsaction extends action {
// ------------------------------------------------------------ constructors
/** * constructor for processoptionsaction.
*/
public processusestrutsaction() {
super();
}
/**
* @param mapping the actionmapping used to select this instance
* @param form the optional actionform bean for this request (if any)
* @param request the http request we are processing
* @param response the http response we are creating
*
* @exception exception if the application logic throws an exception
*
* @return the actionforward for the next view
*/
public actionforward execute(
actionmapping mapping,
actionform form,
httpservletrequest request,
httpservletresponse response)
throws exception {
system.out.println("enter into processusestrutsaction");
if (iscancelled(request)) {
return mapping.findforward("home");
}
/**
* 获取表单信息
* 这里最好用bean实体封装
* 时间关系就不提取
*/
string user=new string("");
string password=new string("");
string title=new string("");
string content=new string("");
string author=new string("");
user=(string) ((dynaactionform) form).get("user");
password=(string) ((dynaactionform) form).get("password");
title=(string) ((dynaactionform) form).get("title");
content=(string) ((dynaactionform) form).get("content");
author=(string) ((dynaactionform) form).get("author");
/***
* 数据库操作
*/
linkdb linkdb=new linkdb();
string sqlstr="insert into conad (title,content,author) values('"+title+"','"+content+"','"+author+"')";
linkdb.executeupdate(sqlstr);
// forward to result page
return mapping.findforward("success");
}}
测试结果：
测试成功！
